The Rheinturm (Rhine Tower) stands 240 metres tall at the edge of the Medienhafen and is Düsseldorf's most distinctive skyline landmark. Built in 1981, it has an observation deck at 168 metres and a revolving restaurant just below it. On a clear day the view extends to Cologne in the south — on an exceptionally clear day, the Cologne Cathedral spires are visible some 40 km away.
The tower is worth visiting for the views and for the curiosity of the binary clock — a column of pulse diodes on the shaft that displays the time in binary code. A diagram in the lift explains the system. The revolving restaurant completes a full rotation every hour and, while the food is not the main event, the setting makes it a memorable dinner option.